Mackenzie Eaglen is a resident fellow at the American Enterprise Institute (AEI), where she works on defense strategy, defense budgets, and military readiness.

While working at AEI, Ms. Eaglen served as a staff member on the National Defense Strategy Commission, a congressionally mandated bipartisan review group whose final report in November 2018, “Providing for the Common Defense,” included assessments and recommendations for the administration. Earlier, Ms. Eaglen served as a staff member on the 2014 congressionally mandated National Defense Panel, established to assess US defense interests and strategic objectives, and in 2010 on the congressionally mandated bipartisan Quadrennial Defense Review Independent Panel, which evaluated the Pentagon’s defense strategy. She is also one of the 12-member US Army War College Board of Visitors, which offers advice about program objectives and effectiveness.

Before joining AEI, Ms. Eaglen worked on defense issues in the House of Representatives, in the US Senate, and at the Pentagon in the Office of the Secretary of Defense and on the Joint Staff.